na 2.5 to a turbo 2.5 - Subaru WRX Forum
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post #1 of 18 Old 08-14-2009, 02:39 PM Thread Starter
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na 2.5 to a turbo 2.5

okay how difficult is it to turbo a na 2.5? is it worth it? what would my cost be? will the factory manifolds work? how much am i gonna have to change?
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post #2 of 18 Old 08-14-2009, 03:31 PM
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It's not worth it in the end to put a turbo on a NA. Start off with a better platform and get a WRX/STi. Plus, your compression is not set up for turbo on a regular Impreza.
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post #3 of 18 Old 08-14-2009, 05:33 PM Thread Starter
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thank you much. does anyone have alead on a wrx/sti? even if it needs alot of work i want a project.
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post #4 of 18 Old 08-14-2009, 07:33 PM
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post #5 of 18 Old 08-14-2009, 08:06 PM Thread Starter
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2002 SUBARU IMPREZA WRX
can you convert one of these rather easy?
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post #6 of 18 Old 08-14-2009, 08:13 PM
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What do you want to converty about it? Its already a WRX, just an automatic. Which is alrite for the most part, just more powerloss through the drivetrain, but dont have to worry about the tranny breaking on you.

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post #7 of 18 Old 08-14-2009, 08:23 PM Thread Starter
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well i prefer manuals myself. but how much power can a factory automatic handle befor it takes a shit?
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post #8 of 18 Old 08-14-2009, 09:32 PM
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I've had nothing but manuals for the last 27 years. I got a WRX with the premium package including AT in June and I love that thing to death. It shifts quicker than I do with a manual and it's so much easier around town...I'm completely spoiled. I will never diss an AT again...I understand that the AT is good for up to about 350 awhp, at least the '06-'07, don't know about earlier models.
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post #9 of 18 Old 08-14-2009, 09:47 PM Thread Starter
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so what your saying is maybe i can do some small upgrade to it and itll hold then i need a new trans?
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post #10 of 18 Old 08-14-2009, 09:50 PM
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The majority of WRX's you'll find are manuals, if you want an AT then get one. If you want a manual just get one in the first place. A WRX in that year has about 160 at the wheels stock, so you could more than double the HP before testing the tranny limits.

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post #11 of 18 Old 08-14-2009, 11:58 PM
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I talked to a guy at my tuner shop a while back, he was running an AVO 380 on his 2003 AT, other than the supoporting mods for the turbo, he said to get a tranny cooler and he was good.

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post #12 of 18 Old 08-15-2009, 12:30 AM Thread Starter
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new to the game your just full of useful tidbits any suggestions on a year range i should be looking at? bad at on one year to another or they all the same any one got a rolling chasis they would part with?
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post #13 of 18 Old 08-15-2009, 12:39 AM
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Quote:
Originally Posted by smithj View Post
thank you much. does anyone have alead on a wrx/sti? even if it needs alot of work i want a project.
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post #14 of 18 Old 08-15-2009, 12:57 AM
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Quote:
Originally Posted by smithj View Post
new to the game your just full of useful tidbits any suggestions on a year range i should be looking at? bad at on one year to another or they all the same any one got a rolling chasis they would part with?
Thanks man. I love to hang out at the shop (my local tuner) when I have free time. Besides here, its where I get hands on and information about our cars. As far as ATs go, Im pretty sure they are all they same through the years. My other car is a 2005 AT stage 2, its alrite, but doesnt compare to my 2007 (its got a 20G at 330AWHP). But from all my reading if you want a manual try and get one with the transmission code that begins with BA, or anything in the later part of the 03 range; they arent as strong as the STI 6spd, but better than the first production year of the WRX.

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Cobbtuning.com"
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post #15 of 18 Old 08-15-2009, 01:03 AM
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Didnt someone on this exact forum already purchase that car? I swear that first pic was posted by someone that was either looking at, or already bought it.

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